96 research outputs found

    What's the Difference?! Gender, Personality, and the Propensity to Start a Business

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    Women start fewer businesses than men. The start-up rate among women in Germany falls short of males' start-up rate by one third. We scrutinize this gender gap using individual-level data from the KfW Start-up Monitor, a large-scale population survey on start-up activity in Germany. As a unique feature, the data combine socio-demographic characteristics, entrepreneurship-related attitudes, and general personality traits of both business starters and non-starters. Estimating binary choice models and employing decomposition techniques, we find that gender differences in socio-demographics alone would even be in favor of higher start-up rates among women, while the distribution of personality traits is less favorable for business start-ups among women and explains about one third of the entire gender difference. Most substantially, men opt for a start-up more often even given identical human capital and related endowments. Qualificational policies targeted towards higher educational attainments of potential entrepreneurs do thus not suffice to increase the number of female business starters.entrepreneurship, gender difference, start-up propensity, decomposition analysis, KfW Start-up Monitor, Germany

    Benchmarking regions: estimating the counterfactual distribution of labor market outcomes

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    This paper develops and implements a new benchmarking approach for labor market regions. Based on panel data for regions, we use nonparametric matching techniques to account for observed labor market characteristics and for spatial proximity. As the benchmark, we estimate the counterfactual distribution of labor market outcomes for a region based on outcomes of similar regions. This allows to measure both the rank (relative performance) and the absolute performance based on the actual outcome for a region. Our outcome variable of interest is the hiring rate among the unemployed. We implement different similarity measures to account for differences in labor market conditions and spatial proximity, and we choose the tuning parameters in our matching approach based on a cross-validation procedure. The results show that both observed labor market characteristics and spatial proximity are important features to successfully match regions. Specifically, the modified Zhao (2004) distance measure and geographic distance in logs work best in our applications. Our estimated performance measures remain quite stable over time

    End-of-year spending and the long-run employment effects of training programs for the unemployed

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    This study re-estimates the employment effects of training programs for the unemployed using exogenous variation in participation caused by budget rules in Germany in the 1980s and early 1990s, resulting in the infamous "end-of-year spending". In addition to estimating complier effects with 2SLS, we implement a exible control-function approach to obtain the average treatment effect on the treated (ATT). Our findings are: Participants who are only selected for budgetary reasons do not benefit from training programs. However, the ATT estimates suggest modest positive effects in the long run. Longer programs are more effective than shorter and more practice-oriented programs

    Pyrido- and benzisothiazolones as inhibitors of histone acetyltransferases (HATs)

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    Histone acetyltransferases (HATs) are interesting targets for the treatment of cancer and HIV infections but reports on selective inhibitors are very limited. Here we report structure–activity studies of pyrido- and benzisothiazolones in the in vitro inhibition of histone acetyltransferases, namely PCAF, CBP, Gcn5 and p300 using a heterogeneous assay with antibody mediated quantitation of the acetylation of a peptidic substrate. Dependent on the chemical structure distinct subtype selectivity profiles can be obtained. While N-aryl derivatives usually are rather pan-HAT inhibitors, N-alkyl derivatives show mostly a preference for CBP/p300. Selected compounds were also shown to be inhibitors of MOF. The best inhibitors show submicromolar inhibition of CBP. Selected compounds affect growth of HL-60 leukemic cells and LNCaP prostate carcinoma cells with higher potency on the leukemic cells. Target engagement was shown with reduction of histone acetylation in LNCaP cells

    Дослідження теплового режиму цеху поросят і свиноматки створеного комбінованою системою опалення

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    The present research addresses solution to the relevant problem of energy efficient heating supply of pig farms with barns of pigs and a sow by applying combined heating systems based on local heating of places for animal keeping. A physical model is developed, which offered the possibility to carry out a complex of experimental studies on determining temperature mode in the barn for piglets and a sow. We established the patterns of influence of thermal capacity of individual heating devices, in particular the heating panel in the place of sow keeping, as well as the heating mat and the infrared heater, on the thermal condition of specific areas.Assessment of the influence of the main factors of the research on its original characteristics was performed. We obtained the equation for determining relative air temperature in the zone of piglets and sow keeping, which depends on relative height of the operation area at a variable air velocity, as well as on incoming air temperature, influenced by the number of animals and background temperature in the premises. Graphical dependences were constructed and empirical dependences were derived based on the conducted experimental studies that can be used in subsequent engineering calculations.Based on the obtained results, we compiled recommendations on the choice of thermotechnical parameters of heating devices, particularly their geometric dimensions, material and method of location of heating elements. Обоснованно и построена приближенная физическая модель формирования температурного режима в цехе поросят и свиноматки с учетом влияния отдельных элементов системы комбинированного отопления. Определены закономерности влияния тепловых и технических характеристик отдельных элементов данной системы на температурный режим зон пребывания поросят и свиноматки и получены зависимости для определения температуры воздуха в этих зонах Обгрунтовано і побудовано наближену фізичну модель формування температурного режиму у цеху поросят і свиноматки із врахуванням впливу окремих елементів системи комбінованого опалення. Визначено закономірності впливу теплових і технічних характеристик окремих елементів даної системи на температурний режим зон перебування поросят і свиноматки та отримано залежності для визначення температури повітря у цих зона

    Progress in the development of non-​BET bromodomain chemical probes

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    The bromodomain and extra terminal (BET) family of bromodomains have been the focus of extensive research, leading to the development of many potent, selective chem. probes and recent clinical assets. The profound biol. associated with BET bromodomain inhibition has provided a convincing rationale for targeting bromodomains for the treatment of disease. However, the BET family represents just eight of the at least 56 human bromodomains identified to date. Until recently, there has been significantly less interest in non-​BET bromodomains, leaving a vast area of research and the majority of this new target class yet to be thoroughly investigated. It has been widely reported that several non-​BET bromodomain containing. proteins are associated with various diseases including cancer and HIV. Therefore, the development of chem. probes for non-​BET bromodomains will facilitate elucidation of their precise biol. roles and potentially lead to the development of new medicines. This review summarises the progress made towards the development of non-​BET bromodomain chem. probes to date. In addn., we highlight the potential for future work in this new and exciting area

    The discovery of I-BRD9, a selective cell active chemical probe for bromodomain containing protein 9 inhibition

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    Acetylation of histone lysine residues is one of the most well-studied post-translational modifications of chromatin, selectively recognized by bromodomain “reader” modules. Inhibitors of the bromodomain and extra terminal domain (BET) family of bromodomains have shown profound anticancer and anti-inflammatory properties, generating much interest in targeting other bromodomain-containing proteins for disease treatment. Herein, we report the discovery of I-BRD9, the first selective cellular chemical probe for bromodomain-containing protein 9 (BRD9). I-BRD9 was identified through structure-based design, leading to greater than 700-fold selectivity over the BET family and 200-fold over the highly homologous bromodomain-containing protein 7 (BRD7). I-BRD9 was used to identify genes regulated by BRD9 in Kasumi-1 cells involved in oncology and immune response pathways and to the best of our knowledge, represents the first selective tool compound available to elucidate the cellular phenotype of BRD9 bromodomain inhibition

    Overlapping political budget cycles in the legislative and the executive

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    We advance the literature on political budget cycles by testing separately for cycles in expenditures for elections in the legislative and the executive. Using municipal data, we can separately identify these cycles and account for general year effects. For the executive branch, we show that it is important whether the incumbent re-runs. To account for the potential endogeneity associated with this decision, we apply a unique instrumental variables approach based on age and pension eligibility rules. We find sizable and significant effects in expenditures before council elections and before joint elections when the incumbent re-runs

    Small molecules, big targets: drug discovery faces the protein-protein interaction challenge.

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    Protein-protein interactions (PPIs) are of pivotal importance in the regulation of biological systems and are consequently implicated in the development of disease states. Recent work has begun to show that, with the right tools, certain classes of PPI can yield to the efforts of medicinal chemists to develop inhibitors, and the first PPI inhibitors have reached clinical development. In this Review, we describe the research leading to these breakthroughs and highlight the existence of groups of structurally related PPIs within the PPI target class. For each of these groups, we use examples of successful discovery efforts to illustrate the research strategies that have proved most useful.JS, DES and ARB thank the Wellcome Trust for funding.This is the author accepted manuscript. The final version is available from Nature Publishing Group via http://dx.doi.org/10.1038/nrd.2016.2
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